Bobbin-holder for spindles of spinning-machines



(No Model.)

J. B. MAWSON. BOBBIN HOLDER FOR SPINDLES 0F SPINNING MACHINES.

No. 411,926. Patented Oct. 1, 1889.

and bobbin-rest.

UNITED STATES PATENT OFFICE.

JOHN B. MA'WSON, OF PHILADELPHIA, PENNSYLVANIA.

BOBBlN-HOLDER FOR SPINDLES OF SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 411,926, dated October1, 1889. Application filed February 21, 1889. Serial No. 300,717. (Nomodel.)

To all whom it mayconcern Be it known that 1, JOHN Bownnss MAW- sON,acitizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have. invented a certain new anduseful Improvement in Spindles and Bobbins for Spinningfllachines, ofwhich the following is a specification.

My invention relates to bobbins and spindles used in spinning-machinesfor spinning all kinds of yarns, silk, and other analogous material. Theobject of the same is to provide means of simple construction andeffective in operation whereby the bobbin when revolved by its spindleis held in contact with the same, and which means prevent any raising orjumping of the bobbin from its rest when the latter is running at agreat speed.

Heretoiore the bobbin-rest of the spindle was provided with two pinsprojecting a short distance above the surface of the bobbin-rest, andwhich pins engaged with grooves provided in the lower head or disk ofthe bobbin. This construction is very objectionable, as the bobbin isliable to raise or jump from its seat, whereby the pins disengage fromthe grooves provided in the bobbin-head, leaving the bobbin either at astandstill, whereby the yarn is caused to slack and kink, or the bobbinis rotated irregularly, giving great waste of yarn, labor, and othertrouble. A further obj ection is that the pins and edges of the grooveswear out so easy, which is also due to the raising and slipping of thebobbin on its spindle Many attempts have been made to overcome theseobjections; but, so far as I am aware, no one has met with success. Somehave designed devices such as springs and spring-latches; but as theyare liable to get out of order, and owing to their great expense, thesame have not been brought into actual use. Others have provideddovetailed or T-shaped studs on the bobbin-rest of the spindle, whichengage with similar-shaped grooves in the lower head of the bobbins; butas the dovetailed or other grooves are diiiicult to form, and, beingformed in the wooden head of the bobbin, are liable to wear out quickly,they are also not practical. All these objections are avoided by myimproved device, consisting simply of hooks pro vided in the bobbin-restof the spindle and also in grooves of the lower head or disk of thebobbin, which hooks interlock with each other when the spindle isrevolved by its whirl from any suitable power by which a uniform twistor spinning of the yarn onto the bobbin is obtained.

My invention will be more fully understood taken in connection with theaccompanying drawings, wherein I have fully illustrated the same, and inwhich- Figure l is an elevation of a spindle with a bobbin appliedthereto, a portion of the lower head being broken away to show theinterlocking of two hooks. Fig. 2 is an elevation of a spindle, showingthe whirl and the bobbin-rest provided with two hooks. Fig. 3 is a planview of the lower head oi the bobbin, showing con centric grooves,eachprovided with a hook. Fig. 4: is a perspective view showing a portion ofthe spindle with its bobbin-rest provided with two hooks and also aportion of a bobbin provided with concentric grooves, each havingsecured therein a hook; and Fig. 5 is a plan view of the bobbin-rest,showing the hooks in position.

Referring now to the drawings for a further description of my invention,A is the spindle, of the usual form.

a is the whirl by which the spindle A, and with it the bobbin B, isrevolved, as readily understood.

a. is the bobbin rest or seat secured to the spindle A, and which rest ais provided with two hooks a arranged on the same radius from the centerof the spindle A and opposite each other, as shown in Figs. 4 and 5.

The bobbin B, with its lower head or disk I), is provided with twogrooves 13 formed concentric to the spindle A, as shown in Figs. 3 and4-, which grooves 11 have a sufficient depth to clear the hooked studsor hooks a of the bobbin-rest a. In these grooves 11 and driven into thehead Z) are the hooks Z), the hooked extremities of which are flush withthe surface of the bobbin head or disk b. The grooves 22 of thebobbin-head h are made long enough to allow a free passage of the entirelength of the hooks a of the rest or seat a, as will be readily seen inreference to Figs. 1,3, 4, and 5.

The operation is as follows: The empty bobbin B being slipped onto thespindle Ain a well-understood manner, and power applied It will bereadily understood that as long as power is applied to the whirl a thebobbin B is prevented from rising or jumping from its seat a, and iskept in uniform contact throughout the filling thereof, avoiding thusmuch waste of yarn or other material to be spun or twisted, as well aslabor and stopping of machine.

Having thus described the nature and object of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. A spinning-machine bobbin provided with two grooves concentric tothespindle to which the bobbin is applied and in each of which groovesis partially concealed or inclosed a hook adapted to engage with asimilar hook provided on a bobbin-rest of the spindle, substantially asand for the purposes set forth.

2. A spinning-machine bobbin provided with concentric grooves, eachhaving secured therein a hook, in combination with a spinning-machinespindle having a bobbin-rest provided with similar hooks to those of thebobbin, said hooks adapted and arranged to interlock with each other,substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in the presence of twosubscribing wit- IIGSSES.

J. B. MAWSON. Witnesses:

HERMANN BORMANN, CHAS. KRAPPENSTEINV

